Maybe this pic will help?
Please help, I have my exam on Friday and really need to know how to solve the 2003 Standard Grade Paper, Question 10.
question: A sheep shelter is part of a cylinder thats is 6 meters
wide and 2 meters high. The cross section of the shelter is a segment
of a circle with centre, O. Calculate the radius of the circle?
Hello,Originally Posted by kenj
I've attached your diagram with additional lines.
You see a right triangle with the hypotenuse of 2r. Then the half chord is the height in the right triangle.
In a right triangle the product of the two parts of the hypotenuse equals the square of the height: